US1118036A - Sheet-delivery for printing-presses or other machines. - Google Patents

Description

R. MIEHLE.

SHEET DELIVERY FOR. PRINTING PBESSES OR OTHER MACHINES.

APPLICATION FILED AUG.11', 1913- Patented Nov. 24, 1914.

2 SHEETSSHEBT 1.

INVENTOR W W.

WI TNESSES: WCL M, f 0 .47%

R. MIEHLE. SHEET DELIVERY FOR PRINTING PRESSBS OR OTHER MACHINES.

APPLICATION FILED AUG. 11. 1913.

1,1 1 8,036. Patented Nov. 24, 1914.

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speciflmtton of Letters Patent,

Patented. lilovo. 2%, rate a a meauo aiea August i1, leis. Seraltitfio. reason To all whom it may concern:

Be it known that l, Rosana Mantras, a citizen of the United States, residing at Plymouth, in the countyoi Marshall and State-of Indiana, have invented a new and useful improvement in Sheet-Peliveries 'Eor Printing-Presses or other Machines, of which the following is a specification.

lily invention relates to delivery oi? sheets of paper for printing presses or like machines wherein the sheets are first passed upon delivery tapes and then deposited upon the delivery boardloy the said -tapes.

The object of the invention is to provide means whereby a current of air is brought to bear upon the sheet to hold it down on the tapes while in transit from the time the sheet is passed upon the receivingand delivery ta es until it is deposited upon the delivery oard.

l attain this object by the mechanism illustrated in the accompanying drawings in which- Figure 1 is a side view in elevation of part of a cylinder printing press, constructed in accordancewith my invention; Fig. 2 is a top plan of Fig. 1; Fig. 3 is a full size sectional view showing one of the air tubes with one end broken away; Fig. 4: is a partial side view showing the delivery driving gearing.

Reference being made to the drawings and reference numerals indicated thereon; 1 denotes the side frame of the machine; 2, the printing or impression cylinder; 3, the cylinder tapes which receive the sheets from the cylinder; 4, represents the traveling delivery tapes which receive the sheets as they are passed forward from the cylinder tapes, 3.

The tapes 4 are looped around the rollers 5, 5' which are pivoted in the chains 6, 6 mounted on sprockets 7 and 8 the latter being mounted securely on shaft 9 which is provided with a gear 12 fixed to the shaft 9.

Mounted loosely on the stud 11 is a gear pinion which has a chain sprocket secured to it upon which the chain 13 mounted and operates. The chain 13 is also mounted and operates with another chain sprocket 14 which is mounted upon thedr-iving shaft 15. This driving shaft 15' passes through the machine and has a gear 16 secured to it which meshes with the gear pinion 17 secured to the shaft 18 of the power blower 18. The blower 18 is of the usual pressure gear type which is well lmown and needs no further description here. The air outlet pipe 19 leads to a cross rod or hollow shaft 20- in which a nuinlcer of short hollow nipples are secured. To these nippics are connected short lengths of ruloher tuhes 22 which are also connected to the nipples 23 on the sockets 24 in which the long hollow pipes 25ers secured. The pipes 25 at their bottom'side are provided with small air apertures or outlet holes 2%. The sachets 97% are provided with set screws 27 sothat they may he readily moved or adjusted'on the hollow shaft El). This allows of adjusting the pipes 25.to any position over the tapes when the tapesare moved'or adjusted.

I have shown two sets of the tuhes, 22.,

one set extending from the'cross shaft'hu toward the impression cylinder and one set in the opposite direction over the delivery board. This arrangement simplifies the distribution of the air to the tubes 22 and also cuts down the tubes to a reasonable length. Tn some cases the air tubes give better results when set over the surface of a tape, and in other cases when set in between the tapes; therefore, the adjustment is desirable to get the best results.

The operation of the traveling tapes is as follows: As the tape rollers 5 pass around with the chains 6 in their travel over the sprockets 7 and 8, the tapes 4; receive a motion around the rollers 5 by the action of the loite forming element 28 which grips the tapes and holds them stationary at this point while the rollers 5 travel around the circuit with the chains 6. it can be readily understood that as the roller 5 passes around the chain sprocket 7 and starts on the hack stretch toward the chain sprocket 8 the sheet will fall upon the delivery board 26 as the roller 5 and the tapes 4': roll out from under the sheet 29.

In practice it is found that the printed sheets, when running at a high rate oi speed, as they travel'from the impression cylinder to the delivery hoard have a tendency to lift 05 from the tapes especially their forward or leading edge. The usual fill way oi holding the sheets down has heen by 7 using long wooden guard fingers lengthwise over the tapes. also been used to hold the placed Top tapes have down hut socket 24 in both of these arrangements the sheet is liable to be smudged by the printed surface of the sheet rubbing against the wood stocks or the tape when the sheets raise up against them while in transit to the delivery board. Now in my arrangement the sheet is held down on the tapes by the action of the air forced through the small apertures 26 at the under side of the pipes by means of the action of the blower 18 through the pipe 19 and hose 22 when the press is put in motion.

It will be seen that the sheet is controlled by the air pressure from the time it leaves the impression cylinder until it is deposited upon the delivery board without the printed surface coming in contact with any parts of the delivery mechanism. In running various size sheets it is sometimes necessary to move or to adjust the tapes, and to realize the best action from the air it is necessary at such times to adjust the pi cs 25 in proper relation with the tapes. his is accomplished by the means of the sliding which can be moved' lengthwise of the tube 9.

What I claim is:

1. In a sheet-delivery apparatus for printuaoae ing-presscs the combination of an impression-cylinder, delivery-tapes for receiving and delivering the sheets, means to actuate said tapes, a series of air-tubes located above the plane of the tapes and positioned lengthwise of the direction of travel of the tapes, said tubes having discharge-apertures in their under sides, and means to supply air under pressure to said tubes whereby the jets of air issuing from the tube apertures play downwardly on the sheets of paper, said tubes being adjustable transversely of the direction of travel of the sheets, substantially as described.

2. ln a sheet delivery apparatus, an 'impression cylinder, delivery tapes for receiving and delivering a sheet with the printed side up, a series of air tubes mounted on a cross rod and said air tubes extending in two directions therefrom and positioned lengthwise to the line of travel of the said tapes, air apertures at the under side of said air tubes, and an air supplying means for said air tubes.

ROBERT MIEHLE. Witnesses:

WALTER M. FULLER, ALvARnz A. BARNES.

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